When program starts, it tries to connect to a internet radio server.
You can see 3 buttons named 1, 2 and 3. They are Presets for anothers internet radios.
You can see another button with a symbol. This button toogle view/pause the spectrum analizer.

Estoy de acuerdo con Dave.
He probado el nuevo archivo y comienza a funcionar y a los dos segundos se detiene. (El sonido sigue funcionando)
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I agree with Dave.
I tried the new file and starts working and stops in two seconds. (The sound still works)